CN112048388B - Extraction method of melia azedarach essential oil and application of melia azedarach essential oil in tobacco and tobacco products - Google Patents
Extraction method of melia azedarach essential oil and application of melia azedarach essential oil in tobacco and tobacco products Download PDFInfo
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- CN112048388B CN112048388B CN202010914946.4A CN202010914946A CN112048388B CN 112048388 B CN112048388 B CN 112048388B CN 202010914946 A CN202010914946 A CN 202010914946A CN 112048388 B CN112048388 B CN 112048388B
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
- C11B9/027—Recovery of volatiles by distillation or stripping
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
- A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
- A24B15/302—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by natural substances obtained from animals or plants
- A24B15/303—Plant extracts other than tobacco
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Abstract
The invention relates to the technical field of tobacco products, in particular to a chinaberry essential oil extraction method and application thereof in tobacco and tobacco products, solving the defects that the extraction of the chinaberry essential oil in the prior art is less, the efficiency is lower, and the final quality of the essential oil is more general, and comprising the following steps: leaching the melia azedarach; centrifuging and crushing; placing into a transparent container, sealing and standing; heating the mixture in a boiler to boil, adding glutamic acid, collecting the generated steam, and condensing to obtain the primary liquid of the melia azedarach essential oil; centrifuging the primary liquid of the melia azedarach essential oil and taking the supernatant to obtain the final melia azedarach essential oil. In the extraction process of the melia azedarach essential oil, the melia azedarach is decomposed into small-particle-size powder, and the melia azedarach powder is subjected to transparent sealing heat treatment in advance before cooking, so that the melia azedarach powder is heated before cooking, the melia azedarach powder is easier to transpire and extract, and the melia azedarach essential oil can be efficiently obtained by combining with subsequent cooking and condensation of a digester, so that the extraction method has high efficiency.
Description
Technical Field
The invention relates to the technical field of tobacco products, in particular to a chinaberry essential oil extraction method and application thereof in tobacco and tobacco products.
Background
The flos Meliae is flower of Melia toosendan or Melia azedarach belonging to Meliaceae. Chinaberry deciduous tree, up to 10 more meters; small She Duisheng, oval, elliptical to lanceolate, panicle approximately She Dengchang, floral; split-sheet oval or long-round oval, petal is light purple, inverted oval spoon-shaped, stamen tube is purple, has no hair or nearly no hair, anther is planted inside the split sheet and grows mutually with the split sheet, the shape of ellipse is long, ovary is nearly spherical, has no hair, columella is slender, and stigma is head-shaped.
Cigarettes are the most common tobacco products. Over the past fifty years, the tobacco industry has made various changes to cigarette design, including the addition of filters, the push out of "low tar cigarettes" and "herbal cigarettes". The tobacco sheet is a regenerated tobacco leaf which is formed by recombining and processing tobacco waste materials such as tobacco powder, tobacco stems, inferior tobacco leaves and the like in the cigarette manufacturing process including a threshing process in a tobacco factory as a raw material.
The melia azedarach essential oil is more and more popular to be accepted by people due to the self-availability and the elegant fragrance, but the existing melia azedarach essential oil is inconvenient to extract, less in extraction yield and low in efficiency, and the quality of the obtained extract is more general.
Therefore, a method for extracting melia azedarach essential oil and application thereof in tobacco and tobacco products are provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a chinaberry essential oil extraction method and application thereof in tobacco and tobacco products.
In order to achieve the purpose, the invention adopts the following technical scheme:
the extraction method of the melia azedarach essential oil provided by the invention comprises the following steps:
s1: leaching the melia azedarach by using deionized water to remove impurities on the surface of the melia azedarach;
s2: carrying out centrifugal crushing on chinaberry flowers to obtain chinaberry flower powder, wherein the particle size of the powder is 0.2-0.4 mm;
s3: putting the chinaberry flower powder into a transparent container, and adding palmitoleic acid, wherein the mass ratio of the palmitoleic acid to the chinaberry flower powder is (0.2-0.8): 1, sealing the transparent container, and standing the sealed transparent container in an environment at the temperature of 70-80 ℃ for 3-5 hours to obtain a mixture;
s4: taking out the mixture in the S3, heating the mixture in a digester to boil, and adding glutamic acid, wherein the mass ratio of the glutamic acid to the mixture is (0.02-0.05): 1, continuously heating for 5-10 min, collecting generated steam and condensing to obtain a primary liquid of the melia azedarach essential oil;
s5: centrifuging the primary liquid of the melia azedarach essential oil obtained in the step S4 for 5-30 min under the condition of 4000-9000 r/min, and taking supernatant fluid to obtain the final melia azedarach essential oil.
Preferably, in S2, the particle size of the powder is 0.3mm.
Preferably, in the S3, the mass ratio of palmitoleic acid to chinaberry flower powder is 0.5: and 1, after sealing, placing the transparent container in an environment at 75 ℃ and standing for 4 hours.
Preferably, in S4, the mass ratio of glutamic acid to the mixture is 0.03:1, continuously heating for 8min.
Preferably, in S5, the primary liquid of the melia azedarach essential oil is centrifuged for 20min under the condition of 7000 r/min.
Preferably, in the S1, the leaching is performed for 3-5 times, and the standing is performed for 5-10 min after the leaching is finished.
Preferably, in S2, the rotation speed of centrifugal crushing is 1300-1700 r/min, the environmental temperature of centrifugal crushing is 50-60 ℃, and the crushing is continued for 60-90 min.
Preferably, the melia azedarach essential oil is prepared by the extraction method.
Preferably, the tobacco contains the melia azedarach essential oil, and the melia azedarach essential oil accounts for 2-4 per mill of the tobacco sheet.
Preferably, the tobacco product contains the melia azedarach essential oil, and the melia azedarach essential oil accounts for 1 to 4 per mill of the tobacco sheet.
Compared with the prior art, the invention has the beneficial effects that:
1. in the extraction process, the transfer product of the melia azedarach is sealed, the transparent container is used for conducting heat, palmitoleic acid is added in the sealing process and is simultaneously sealed with the melia azedarach powder, so that the melia azedarach powder has a large-degree liquid seepage condition at a high temperature for a long time, the liquid seepage degree is increased, and the oil content of the subsequently obtained melia azedarach is further improved.
2. In the process of cooking after sealing and heating, glutamic acid is added, the glutamic acid is utilized to improve the content of ester substances in steam liquid, so that the quality of the obtained initial liquid of the melia azedarach essential oil is better, meanwhile, the terminal is purified and separated by centrifuging to obtain supernatant, impurities in the supernatant are removed again, and the melia azedarach essential oil with better quality is obtained.
3. In the extraction process of the melia azedarach essential oil, the melia azedarach is decomposed into small-particle-size powder, and the melia azedarach powder is subjected to transparent sealing heat treatment in advance before cooking, so that the melia azedarach powder is heated before cooking, the melia azedarach powder is easier to transpire and extract, and the melia azedarach essential oil can be efficiently obtained by combining with subsequent cooking and condensation of a digester, so that the extraction method has high efficiency.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control. When "mass, concentration, temperature, time, or other value or parameter is expressed as a range, preferred range, or as a range defined by a list of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, a range of 1 to 50 should be understood to include any number, combination of numbers, or subrange selected from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, or 50, and all fractional values between the above integers, e.g., 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, and 1.9. With respect to sub-ranges, specifically consider "nested sub-ranges" that extend from any endpoint within the range. For example, nested sub-ranges of exemplary ranges 1-50 may include 1-10, 1-20, 1-30, and 1-40 in one direction, or 50-40, 50-30, 50-20, and 50-10 in another direction. "
The present invention is further illustrated below with reference to specific examples in which various processes and methods not described in detail are conventional methods well known in the art. Materials, reagents, devices, instruments, apparatuses and the like used in the following examples are commercially available unless otherwise specified.
Example one
The extraction method of the melia azedarach essential oil provided by the invention comprises the following steps:
s1: leaching the melia azedarach by using deionized water, removing impurities on the surface of the melia azedarach, leaching for 3 times, and standing for 5min after leaching is finished;
s2: carrying out centrifugal crushing on chinaberry flowers to obtain chinaberry flower powder, wherein the particle size of the powder is 0.2mm, the rotating speed of the centrifugal crushing is 1300r/min, the environmental temperature of the centrifugal crushing is 50 ℃, and the crushing is continued for 60min;
s3: putting the chinaberry flower powder into a transparent container, and adding palmitoleic acid, wherein the mass ratio of palmitoleic acid to chinaberry flower powder is 0.2:1, sealing the transparent container, placing the transparent container in an environment with the temperature of 70 ℃ after sealing, and standing for 3 hours to obtain a mixture;
s4: taking out the mixture in the S3, placing the mixture in a digester for heating to boiling, and then adding glutamic acid, wherein the mass ratio of the glutamic acid to the mixture is 0.02:1, continuously heating for 5min, collecting generated steam and condensing to obtain a primary liquid of the melia azedarach essential oil;
s5: and (4) centrifuging the primary liquid of the melia azedarach essential oil obtained in the step (S4) for 5min at the speed of 4000r/min, and taking supernatant liquid of the primary liquid to obtain the final melia azedarach essential oil.
Example two
The extraction method of the melia azedarach essential oil provided by the invention comprises the following steps:
s1: leaching the melia azedarach by using deionized water, removing impurities on the surface of the melia azedarach, leaching for 4 times, and standing for 7min after leaching is finished;
s2: carrying out centrifugal crushing on chinaberry flowers to obtain chinaberry flower powder, wherein the particle size of the powder is 0.3mm, the rotation speed of the centrifugal crushing is 1400r/min, the environmental temperature of the centrifugal crushing is 54 ℃, and the crushing is continued for 70min;
s3: putting the chinaberry flower powder into a transparent container, and adding palmitoleic acid, wherein the mass ratio of palmitoleic acid to chinaberry flower powder is 0.4:1, sealing the transparent container, placing the transparent container in an environment with the temperature of 73 ℃ after sealing, and standing for 4 hours to obtain a mixture;
s4: taking out the mixture in the S3, placing the mixture in a digester for heating to boil, and then adding glutamic acid, wherein the mass ratio of the glutamic acid to the mixture is 0.03:1, continuously heating for 7min, collecting generated steam and condensing to obtain a primary liquid of the melia azedarach essential oil;
s5: centrifuging the primary liquid of the melia azedarach essential oil obtained in the step S4 for 10min at the speed of 5000r/min, and taking supernatant fluid to obtain the final melia azedarach essential oil.
EXAMPLE III
The extraction method of the melia azedarach essential oil provided by the invention comprises the following steps:
s1: leaching the melia azedarach by using deionized water, removing impurities on the surface of the melia azedarach, leaching for 4 times, and standing for 9min after leaching is finished;
s2: centrifuging and crushing melia azedarach to obtain melia azedarach powder, wherein the particle size of the melia azedarach powder is 0.3mm, the rotation speed of the centrifugal crushing is 1600r/min, the environmental temperature of the centrifugal crushing is 58 ℃, and continuously crushing for 80min;
s3: putting the chinaberry flower powder into a transparent container, and adding palmitoleic acid, wherein the mass ratio of palmitoleic acid to chinaberry flower powder is 0.7:1, sealing the transparent container, placing the transparent container in an environment at 78 ℃ after sealing, and standing for 4 hours to obtain a mixture;
s4: taking out the mixture in the S3, placing the mixture in a digester for heating to boiling, and then adding glutamic acid, wherein the mass ratio of the glutamic acid to the mixture is 0.04:1, continuously heating for 9min, collecting generated steam and condensing to obtain a primary liquid of the melia azedarach essential oil;
s5: centrifuging the primary liquid of the melia azedarach essential oil obtained in the step S4 for 20min at 8000r/min, and taking supernatant fluid to obtain the final melia azedarach essential oil.
Example four
The extraction method of the melia azedarach essential oil provided by the invention comprises the following steps:
s1: leaching the melia azedarach by using deionized water, removing impurities on the surface of the melia azedarach, leaching for 5 times, and standing for 10min after leaching is finished;
s2: carrying out centrifugal crushing on chinaberry flowers to obtain chinaberry flower powder, wherein the particle size of the powder is 0.4mm, the rotating speed of the centrifugal crushing is 1700r/min, the environmental temperature of the centrifugal crushing is 60 ℃, and the crushing is continued for 90min;
s3: putting the chinaberry flower powder into a transparent container, and adding palmitoleic acid, wherein the mass ratio of palmitoleic acid to the chinaberry flower powder is 0.8:1, sealing the transparent container, placing the transparent container in an environment with the temperature of 80 ℃ after sealing, and standing for 5 hours to obtain a mixture;
s4: taking out the mixture in the S3, placing the mixture in a digester for heating to boiling, and then adding glutamic acid, wherein the mass ratio of the glutamic acid to the mixture is 0.05:1, continuously heating for 10min, collecting generated steam and condensing to obtain a primary liquid of the melia azedarach essential oil;
s5: centrifuging the primary liquid of the melia azedarach essential oil obtained in the step S4 for 30min at 9000r/min, and taking supernatant fluid to obtain the final melia azedarach essential oil.
Comparative example 1
A method for extracting melia azedarach essential oil comprises the following steps:
s1: leaching the melia azedarach by using deionized water, removing impurities on the surface of the melia azedarach, leaching for 5 times, and standing for 10min after leaching is finished;
s2: carrying out centrifugal crushing on chinaberry flowers to obtain chinaberry flower powder, wherein the particle size of the powder is 0.4mm, the rotating speed of the centrifugal crushing is 1700r/min, the environmental temperature of the centrifugal crushing is 60 ℃, and the crushing is continued for 90min;
s3: putting the chinaberry powder into a transparent container, sealing the transparent container, putting the transparent container into an environment with the temperature of 80 ℃ after sealing, and standing for 5 hours to obtain a mixture;
s4: taking out the mixture in the S3, placing the mixture in a digester for heating to boiling, and then adding glutamic acid, wherein the mass ratio of the glutamic acid to the mixture is 0.05:1, continuously heating for 10min, collecting generated steam and condensing to obtain a primary liquid of the melia azedarach essential oil;
s5: centrifuging the primary liquid of the melia azedarach essential oil obtained in the step S4 for 30min at 9000r/min, and taking supernatant fluid to obtain the final melia azedarach essential oil.
Comparative example No. two
A method for extracting melia azedarach essential oil comprises the following steps:
s1: leaching the melia azedarach by using deionized water, removing impurities on the surface of the melia azedarach, leaching for 5 times, and standing for 10min after leaching is finished;
s2: centrifuging and crushing melia azedarach to obtain melia azedarach powder, wherein the particle size of the powder is 0.4mm, the rotation speed of the centrifugal crushing is 1700r/min, the environmental temperature of the centrifugal crushing is 60 ℃, and the crushing is continued for 90min;
s3: putting the chinaberry flower powder into a transparent container, and adding palmitoleic acid, wherein the mass ratio of palmitoleic acid to chinaberry flower powder is 0.8:1, sealing the transparent container, placing the transparent container in an environment with the temperature of 80 ℃ after sealing, and standing for 5 hours to obtain a mixture;
s4: taking out the mixture in the step S3, placing the mixture in a boiler, heating the mixture to boiling for 10min continuously, collecting generated steam and condensing to obtain an initial liquid of the melia azedarach essential oil;
s5: centrifuging the primary liquid of the melia azedarach essential oil obtained in the step S4 for 30min at 9000r/min, and taking supernatant fluid to obtain the final melia azedarach essential oil.
Comparative example No. three
A method for extracting melia azedarach essential oil comprises the following steps:
s1: leaching the melia azedarach by using deionized water, removing impurities on the surface of the melia azedarach, leaching for 5 times, and standing for 10min after leaching is finished;
s2: carrying out centrifugal crushing on chinaberry flowers to obtain chinaberry flower powder, wherein the particle size of the powder is 0.4mm, the rotating speed of the centrifugal crushing is 1700r/min, the environmental temperature of the centrifugal crushing is 60 ℃, and the crushing is continued for 90min;
s3: heating the chinaberry powder in a boiler until the chinaberry powder is boiled, and adding glutamic acid, wherein the mass ratio of the glutamic acid to the mixture is 0.05:1, continuously heating for 10min, collecting generated steam and condensing to obtain a primary liquid of the melia azedarach essential oil;
s4: centrifuging the primary liquid of Melia azedarach essential oil at 9000r/min for 30min, and collecting supernatant to obtain final Melia azedarach essential oil.
Comparative example No. four
A method for extracting melia azedarach essential oil comprises the following steps:
s1: leaching the melia azedarach by using deionized water, removing impurities on the surface of the melia azedarach, leaching for 5 times, and standing for 10min after leaching is finished;
s2: carrying out centrifugal crushing on chinaberry flowers to obtain chinaberry flower powder, wherein the particle size of the powder is 0.4mm, the rotating speed of the centrifugal crushing is 1700r/min, the environmental temperature of the centrifugal crushing is 60 ℃, and the crushing is continued for 90min;
s3: heating the powder of Melia azedarach in a boiler to boil, heating for 10min, collecting the generated steam, and condensing to obtain primary Melia azedarach essential oil solution;
s4: centrifuging the primary liquid of Melia azedarach essential oil at 9000r/min for 30min, and collecting supernatant to obtain final Melia azedarach essential oil.
The tests of the essential oil of melia azedarach extracted in the first to fourth examples and the first to fourth comparative examples were carried out, wherein 1kg of melia azedarach was used as a raw material, and the results were as follows:
TABLE 1
| Melia azedarach oil quality (kg) | Smell(s) | |
| Example one | 0.23 | Obvious fragrance |
| Example two | 0.25 | FragranceIs obvious |
| EXAMPLE III | 0.26 | The fragrance is obvious |
| Example four | 0.28 | Obvious fragrance |
| Comparative example 1 | 0.13 | Obvious fragrance |
| Comparative example No. two | 0.27 | Slight fragrance |
| Comparative example No. three | 0.08 | Obvious fragrance |
| Comparative example No. four | 0.07 | Slight fragrance |
As can be seen from the data in Table 1, the first to fourth examples showed significantly lower quality and lighter odor of the resulting neem oil than the fourth comparative example without the original S3 and glutamic acid.
Example four compares the same conditions as comparative example one, which did not add palmitoleic acid to the transparent container, so that the heat treatment of the azadirachta pieces was unexpected when sealed and heated, resulting in a lower quality of final azadirachta essential oil than example four;
in the third comparative example, the sealed and heat-sealed environment of the transparent container was not directly provided, which further reduced the quality of the azadirachtin oil obtained finally, and thus it was found that the quality of the azadirachtin oil obtained finally was effectively improved regardless of whether the sealed and heat-sealed environment of the palmitoleic acid or the transparent container was used.
In comparative example two, during the steam generation process by the cooking and heating of the cooker, no glutamic acid was added, and the resulting neem flower essential oil was finally condensed to have a lighter fragrance and a poorer quality.
EXAMPLE five
A tobacco is added with the melia azedarach essential oil obtained in the fourth embodiment, and the melia azedarach essential oil accounts for 2 per mill of the tobacco.
EXAMPLE six
A tobacco is added with the melia azedarach essential oil obtained in the fourth embodiment, and the melia azedarach essential oil accounts for 3 per mill of the tobacco.
EXAMPLE seven
A tobacco is added with the melia azedarach essential oil obtained in the fourth embodiment, and the melia azedarach essential oil accounts for 4 per mill of the tobacco.
Comparative example five
A tobacco, which is not added with the neem flower essential oil obtained in the fourth embodiment.
Example eight
A tobacco product is added with the melia azedarach essential oil obtained in the fourth embodiment, and the melia azedarach essential oil accounts for 1 per mill of the tobacco product.
Example nine
A tobacco product is added with the melia azedarach essential oil obtained in the fourth embodiment, and the melia azedarach essential oil accounts for 3 per mill of the tobacco product.
Example ten
A tobacco product is added with the melia azedarach essential oil obtained in the fourth embodiment, and the melia azedarach essential oil accounts for 4 per mill of the tobacco product.
Comparative example VI
A tobacco product is prepared without adding the neem flower essential oil obtained in the fourth embodiment.
The results of testing five to ten of the above examples and five to six of the comparative examples are shown in the following table 2:
TABLE 2
| Taste of the product | |
| EXAMPLE five | The tobacco fragrance is obviously improved, the taste is elegant, the fragrance is obviously improved, and the aftertaste is comfortable |
| EXAMPLE six | The tobacco fragrance is obviously improved, the taste is elegant, the fragrance is obviously improved, and the aftertaste is comfortable |
| EXAMPLE seven | The tobacco fragrance is obviously improved, the taste is elegant, the fragrance is obviously improved, and the aftertaste is comfortable |
| Comparative example five | Weak cigarette fragrance and unpleasant aftertaste |
| Example eight | The tobacco fragrance is obviously improved, the taste is elegant, the fragrance is obviously improved, and the aftertaste is comfortable |
| Example nine | The tobacco fragrance is obviously improved, the taste is elegant, the fragrance is obviously improved, and the aftertaste is comfortable |
| Example ten | The tobacco fragrance is obviously improved, the taste is elegant, the fragrance is obviously improved, and the aftertaste is comfortable |
| Comparative example six | Weak cigarette fragrance and unpleasant aftertaste |
As can be seen from Table 2, the tobacco and tobacco products prepared from the melia azedarach essential oil have the advantages of obviously improved tobacco aroma, elegant taste, obvious aroma improvement, comfortable aftertaste and obviously improved quality of the tobacco products.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The extraction method of the melia azedarach essential oil is characterized by comprising the following steps of:
s1: leaching the melia azedarach by using deionized water to remove impurities on the surface of the melia azedarach;
s2: carrying out centrifugal crushing on chinaberry flowers to obtain chinaberry flower powder, wherein the particle size of the powder is 0.2-0.4 mm;
s3: putting the chinaberry flower powder into a transparent container, and adding palmitoleic acid, wherein the mass ratio of the palmitoleic acid to the chinaberry flower powder is (0.2-0.8): 1, sealing the transparent container, and standing the sealed transparent container in an environment at the temperature of 70-80 ℃ for 3-5 hours to obtain a mixture;
s4: taking out the mixture in the S3, heating the mixture in a digester to boil, and adding glutamic acid, wherein the mass ratio of the glutamic acid to the mixture is (0.02-0.05): 1, continuously heating for 5-10 min, collecting generated steam and condensing to obtain a primary liquid of the melia azedarach essential oil;
s5: centrifuging the primary liquid of the melia azedarach essential oil obtained in the step S4 for 5-30 min under the condition of 4000-9000 r/min, and taking supernatant fluid to obtain the final melia azedarach essential oil.
2. The method for extracting melia azedarach essential oil as claimed in claim 1, wherein the size of the powder in S2 is 0.3mm.
3. The method for extracting melia azedarach essential oil as claimed in claim 1, wherein in the S3, the mass ratio of palmitoleic acid to melia azedarach powder is 0.5: and 1, after sealing, placing the transparent container in an environment at 75 ℃ and standing for 4 hours.
4. The method for extracting melia azedarach essential oil as claimed in claim 1, wherein in the S4, the mass ratio of glutamic acid to the mixture is 0.03:1, continuously heating for 8min.
5. The method for extracting melia azedarach essential oil according to claim 1, wherein in the step S5, the melia azedarach essential oil primary solution is centrifuged at 7000r/min for 20min.
6. The method for extracting melia azedarach essential oil according to any one of claims 1 to 5, wherein in S1, the leaching is performed 3 to 5 times, and the obtained product is left for 5 to 10min after the leaching is finished.
7. The method for extracting melia azedarach essential oil according to any one of claims 1 to 5, wherein in S2, the rotation speed of centrifugal crushing is 1300 to 1700r/min, the environment temperature of centrifugal crushing is 50 to 60 ℃, and the crushing is continued for 60 to 90min.
8. An essential oil of melia azedarach, prepared by the extraction method of any one of claims 1 to 7.
9. A tobacco comprising the neem flower essential oil of claim 8, wherein the neem flower essential oil comprises from about 2 to about 4% of the tobacco sheet.
10. A smoking article comprising azadirachtin oil according to claim 8, wherein the azadirachtin oil comprises between 1 and 4% o of the tobacco sheet.
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| Publication number | Priority date | Publication date | Assignee | Title |
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